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Related Experiment Videos

Semiconductor materials and radiation detection.

Alan Owens1

  • 1Science Payload and Advanced Concepts Office, SCI-AT, ESA/ESTEC, Postbus 299, 2200AG Noordwijk, The Netherlands. aowens@rssd.esa.int

Journal of Synchrotron Radiation
|February 24, 2006
PubMed
Summary

Wide band-gap compounds offer advanced X-ray and gamma-ray detection capabilities, overcoming limitations of silicon and germanium detectors. Research reviews suitable materials and progress in developing these next-generation radiation detectors.

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Area of Science:

  • Materials Science
  • Nuclear Instrumentation
  • Spectroscopy

Background:

  • Silicon (Si) and Germanium (Ge) are standard laboratory detectors for X-ray and gamma-ray spectroscopy.
  • Si and Ge detectors have limitations including cooling requirements, modest stopping power, and radiation intolerance.
  • These limitations restrict their use in demanding applications.

Purpose of the Study:

  • To review suitable wide band-gap compound materials for advanced radiation detection.
  • To assess current progress in developing X-ray and gamma-ray detectors based on these compounds.
  • To highlight the potential of engineered materials for specific applications.

Main Methods:

  • Overview of wide band-gap compound materials with potential for radiation detection.

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  • Review of fabrication techniques and material challenges.
  • Analysis of performance characteristics relevant to X-ray and gamma-ray spectroscopy.

    • Main Results:

    • Wide band-gap compounds can operate in harsh chemical, thermal, and radiation environments.
    • These materials offer sub-keV spectral resolution at X-ray wavelengths.
    • Significant material and fabrication challenges have historically hindered development at hard X- and gamma-ray wavelengths.

    Conclusions:

    • Wide band-gap compounds present a promising alternative to Si and Ge for advanced spectroscopy.
    • Engineering material properties allows for tailored detector applications.
    • Continued research and development are crucial to overcome fabrication hurdles and realize the full potential of these detectors.